Blockchain Explorer Litecoin https://hedgedoc.k8s.eonerc.rwth-aachen.de/kFtMQ9aTSTis_8Gbdx6V0Q/ Solana: Typically a couple of seconds to a minute. Nonetheless, in unusual circumstances, Solana blockchain transactions can stay unconfirmed for hrs and even days These transactions remain in the mempool (memory pool) till a miner or validator selects them and contains them in a very block. https://www.instapaper.com/p/16800964